6.50 mm pitch — power-grade footprint
The 179847-1: The 0.256" (6.50 mm) pitch on this 4-position header is the first thing to notice. That wide spacing tells you this is a power interconnect, not a signal-density part — the contacts and the board trace can carry more current without thermal crowding. The shrouded - 4 wall design and the locking ramp fastening type mean the mating receptacle stays put under vibration. No secondary latch needed.
Kinked pin, solder termination — the kink provides a press-fit retention in the plated through-hole before wave solder, holding the header in place during assembly.